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Challenge to water permit for Minnesota copper-nickel mine dismissed

MINING.com Editor | February 16, 2021 | 3:20 pm Intelligence USA Cobalt Copper Nickel Palladium Platinum 

A federal judge on Tuesday dismissed a challenge to the US Environmental Protection Agency's (EPA) oversight of a National Pollutant Discharge Elimination System water quality permit issued to Poly Met Mining Inc., a wholly-owned subsidiary of PolyMet Mining Corp. (TSX:...

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